Brook Floater vs robust bobtail

Alasmidonta varicosa compared with Sepiola robusta

Key Differences

• Brook Floater is Vulnerable while robust bobtail is Data Deficient.

Taxonomic Classification

Rank	Brook Floater	robust bobtail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Cephalopoda (Cephalopods)
Order	Unionida (Unionida)	Sepiida (Sepiida)
Family	Unionidae	Sepiolidae
Genus	Alasmidonta	Sepiola
Species	Alasmidonta varicosa	Sepiola robusta

Evolutionary Relationship

Brook Floater and robust bobtail share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

robust bobtail

DD — Data Deficient

Physical Characteristics

Attribute	Brook Floater	robust bobtail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

Native to North America, inhabiting ecosystems characteristic of the region.

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

robust bobtail

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.